diff --git a/src/gfxstream/guest/platform/kumquat/vulkan-mapper/GfxStreamVulkanMapper.cpp b/src/gfxstream/guest/platform/kumquat/vulkan-mapper/GfxStreamVulkanMapper.cpp
index 4754c44f6b7..93e6f08a200 100644
--- a/src/gfxstream/guest/platform/kumquat/vulkan-mapper/GfxStreamVulkanMapper.cpp
+++ b/src/gfxstream/guest/platform/kumquat/vulkan-mapper/GfxStreamVulkanMapper.cpp
@@ -42,7 +42,7 @@ std::unique_ptr<GfxStreamVulkanMapper> sVkMapper;
 GfxStreamVulkanMapper::GfxStreamVulkanMapper() {}
 GfxStreamVulkanMapper::~GfxStreamVulkanMapper() {}
 
-uint32_t chooseGfxQueueFamily(vk_uncompacted_dispatch_table* vk, VkPhysicalDevice phys_dev) {
+static uint32_t chooseGfxQueueFamily(vk_uncompacted_dispatch_table* vk, VkPhysicalDevice phys_dev) {
     uint32_t family_idx = UINT32_MAX;
     uint32_t nProps = 0;
 
diff --git a/src/gfxstream/guest/vulkan_enc/AndroidHardwareBuffer.h b/src/gfxstream/guest/vulkan_enc/AndroidHardwareBuffer.h
index 8790a7a4715..33ab72fa8ca 100644
--- a/src/gfxstream/guest/vulkan_enc/AndroidHardwareBuffer.h
+++ b/src/gfxstream/guest/vulkan_enc/AndroidHardwareBuffer.h
@@ -20,8 +20,6 @@ namespace vk {
 uint64_t getAndroidHardwareBufferUsageFromVkUsage(const VkImageCreateFlags vk_create,
                                                   const VkImageUsageFlags vk_usage);
 
-void updateMemoryTypeBits(uint32_t* memoryTypeBits, uint32_t colorBufferMemoryIndex);
-
 VkResult getAndroidHardwareBufferPropertiesANDROID(
     gfxstream::Gralloc* grallocHelper, const AHardwareBuffer* buffer,
     VkAndroidHardwareBufferPropertiesANDROID* pProperties);
diff --git a/src/gfxstream/guest/vulkan_enc/ResourceTracker.cpp b/src/gfxstream/guest/vulkan_enc/ResourceTracker.cpp
index 13873f39b3b..df516f1aa24 100644
--- a/src/gfxstream/guest/vulkan_enc/ResourceTracker.cpp
+++ b/src/gfxstream/guest/vulkan_enc/ResourceTracker.cpp
@@ -2331,7 +2331,7 @@ void ResourceTracker::on_vkDestroyDevice_pre(void* context, VkDevice device,
 }
 
 #if defined(VK_USE_PLATFORM_ANDROID_KHR) || DETECT_OS_LINUX
-void updateMemoryTypeBits(uint32_t* memoryTypeBits, uint32_t memoryIndex) {
+static void updateMemoryTypeBits(uint32_t* memoryTypeBits, uint32_t memoryIndex) {
     *memoryTypeBits = 1u << memoryIndex;
 }
 #endif